Do you have a comment about this page? Fixed Base Routers 8mm S. The Bosch Colt Palm-Grip router will make a welcome and frequently used addition to any mahual shop. The following Bosch routers are recommended for these applications: Page 20 Micrograin control cut bits for special decorative grooving and edging.
Click images to enlarge. Click image to enlarge. A key feature of the Bosch Colt Palm-Grip router is the rubberized palm grip. The Bosch Colt Palm-Grip router features an easy to use push-button shaft lock and self-extracting collet that makes changing bits a one wrench, non-frustrating task.
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Customer Support Have a tool, accessory, application or service question? More information. Search for Parts Diagram Locate and download the parts diagram for your tool. Product Registration Protecting your investment in Bosch power tools can save you time and money in the future.
Register now. Order Spare Parts Order your genuine Bosch parts here. Order now. Open contact form. Ask your question! For added convenience, a front spindle lock on the motor means easy, one-wrench bit changes, but a shaft wrench is also included for those who prefer to use two wrenches. In addition, the speed dial is conveniently mounted on top of the tool body for easy access. An added bonus, the motor housing has a palm-shaped, rubber over-molded grip that allows for stable, one-handed operation.
Finally, weighing about three pounds, the PR20EVSK offers a surprisingly rugged aluminum fixed base that's durable, solid, and reliable. Constant Response Circuitry for Stable Motor Speed This model includes Bosch's 'Constant Response' circuitry, which monitors and maintains speed under load for consistent performance and overload protection. Constant Response works by detecting tough loads and then increasing power to maintain the selected RPM. Working with stable speed lets you concentrate on controlling the router, so you'll always make clean, burn-free cuts.
Note the reading on the scale below the clamp lever and add the desired depth-of- cut to this value to determine the target scale value. Lower the motor until the target scale value is reached. Always make sure the motor is held tightly in the base. Check the depth-of-cut and make fine adjustment, if necessary.
Note: the depth of the motor and bit may shift very slightly when the clamping lever is close. Make a trial cut to verify that the router is set to make the cut as desired. Adjust the desired depth-of-cut with the knurled wheel on back of base.
Rotate the knurled wheel clockwise to increase the routing depth, counterclockwise to decrease the cutting depth. Each complete rotation of the dial equals 1. Re-adjusting the nut can change the tension of the clamping lever. Check the depth-of-cut and make an additional fine adjustment, if necessary. Note: the depth of the motor and bit may shift very slightly when the clamping lever is closed. When final coarse and fine adjustments have been made, fasten the base clamp lever to secure adjustments.
Do not over-tighten. For deeper cuts, make several progressively deeper cuts by starting at one depth and then make several subsequent passes, increasing the cutting depth with each pass. To be certain that your depth settings are as desired, you may want to make test cuts in scrap material before beginning work.
Electronic feedback control minimizes torque twist customary in routers by limiting the speed at which motor starts. The electronic speed control feature allows motor speed to be matched to cutter size and material hardness for improved finish, extended bit life, and higher performance. Speed may be changed while tool is on. The reference numbers on the dial facilitate resetting control to desired speed. The speed chart indicates the relationship between settings and application, exact settings are determined by operator experience and preference.
The bit manufacturer may also have a speed recommendation. In addition to the main palm-grip area at the back of the motor housing and base, the base has Bosch-exclusive finger support. The pockets feature finger guards to provide a barrier between the finger pockets and the bit area Fig As seen from the top of the router, the bit turns clockwise and the cutting edges face accordingly. Therefore, the most efficient cut is made by feeding the router so that the bit turns into the work, not away.
Figure 13 shows proper feed for various cuts. How fast you feed depends on the hardness of the material and the size of the cut. For some materials, it is best to make several cuts of increasing depth. If the router is hard to control, heats up, runs very slowly or leaves an imperfect cut, consider these causes:. Wrong direction of feed — hard to control. Feeding too fast — overloads motor. Dull bit — overloads motor. Cut is too large for one pass — overloads motor. Feeding too slow — leaves friction burns on work.
Feed smoothly and steadily do not force. You will soon learn how the router sounds and feels when it is working best.
Always hold the router off the work when turning the switch on or off. Contact the work with the router after the router has reached full speed, and remove it from the work before turning the switch off. Operating in this manner will prolong switch and motor life and will greatly increase the quality of your work. When routing or doing related work in wood and plastics, the best finishes will result if the depth of cut and feed rate are regulated to keep the motor operating at high speed.
Feed the router at a moderate rate. Soft materials require a faster feed rate than hard materials. The router may stall if improperly used or overloaded. Reduce the feed rate to prevent possible damage to the tool.
Always be sure the collet chuck is tightened securely before use. Always use router bits with the shortest cutting length necessary to produce the desired cut. This will minimize router bit runout and chatter. It may be necessary to make the cut in more than one pass with progressively deeper settings to avoid overloading the motor.
If the bit cuts freely and the motor does not slow down, the cutting depth is generally correct. The router can be guided through the work in any of several ways. The method you use depends, of course, on the demands of the particular job and on convenience. For routing operations such as grooving or dadoing, it is often necessary to guide the tool in a line parallel to a straight edge. One method of obtaining a straight cut is to securely clamp a board or other straightedge to the work surface, and guide the edge of the router sub-base along this path Fig.
The router guide is an optional accessory that will guide the router parallel to a straight edge Fig. The router guide is supplied in two part held together with a bolt, wing nut and washer.
It also includes a wing screw and washer to fasten the guide to the router. The guide also features a scale for accurately positioning the edge guide relative to the bit. With the guide installed and adjusted, the router should be fed normally, keeping the guide in contact with the edge of the workpiece at all times. The router guide can also be positioned directly under the router base for operations where a cut is needed close to or at the edge of the work, such as when rounding off deck planks.
Direction of router feed. Self-piloted bits have an integral round tip or ball bearing which rides against the work surface above or below the cutters to control horizontal cutting depth Fig. When using these bits, neither the roller guide or straight guide is required. When guiding against a laminated surface, use wax or other lubricant and do not apply excess pressure or the piloted end may mar the work.
Bearing pilots must be kept clean and free of adhesive or other residue. Router bit bearings are sealed and permanently lubricated, and should be replaced when they no longer turn freely to avoid damaging the work surface. Loosen wing nut at bottom. Tighten wing nut on the bottom of the guide assembly. Make a trial cut to check the setting and readjust as necessary. To maintain a consistent width of cut, a consistent angle must be maintained between the router and the workpiece.
Available as optional accessories Optional large round subbases are available separately and allow various templet guide bushings to be used with the palm routers.
Templet guide bushings are used to guide the router to repeated make consistent openings and inlays using various templets also referred to as patterns and jigs. Templets for standard routing applications are available commercially, such as the Bosch hinge templet kit; and templets for specialty applications are typically made by users for their specific needs.
Insert templet guide into top of round subbase such that the anti-rotation stops in the subbase fit into the corresponding places in the templet guide. When using the RA adapter, first place the rubber O-ring between the anti-rotation stops and the subbase. Loosely attach round subbase using panhead screws that come with that accessory. Center the templet guide around the bit. The optional Bosch RA Centering Cone can be used to ensure that the templet guide is properly centered.
Tighten the panhead screws to hold the templet guide and subbase in position. Note: If a templet guide seems loose, repeat steps 2- 5 after adding the rubber O-ring.
Attach the threaded templet guide by putting the templet guide through the bottom and attaching the ring from the top. Templet patterns can be made of plywood, hardboard, metal or even plastic. The design can be cut with a router, jigsaw, or other suitable cutting tool.
The PR Offset Base is designed for routing in confined areas, especially for trimming laminates in areas that are inaccessible with the standard fixed base, especially locations that are close to adjacent vertical surfaces, such as the tops of alreadyinstalled counter backsplash backsplashes Fig. The PR can also be used to scribe the back of a new counter backsplash so that it will mate precisely with the wall against which it will rest Fig. The nature of a belt drive mechanism like the one in the PR Offset Base creates more heat than when the motor is used in its other bases.
Depending on the application, the PR Offset Base can be used for up to about 10 minutes continuously before it will need to be left idle so that it can cool off.
Remove collet from motor and install toothed drive pulley using collet wrench. The motor is then installed into the base according to the instructions on page 9.
Insert screwdriver not included through the U-shaped opening in the subbase to fit belt over drive pulley. Drive Gear.
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